A paint manufacturer uses a machine to fill gallon cans with paint (see figure). Error tolerance =
Question:
A paint manufacturer uses a machine to fill gallon cans with paint (see figure).
Error tolerance = 0.25 oz
(a) The manufacturer wants to estimate the mean volume of paint the machine is putting in the cans within 0.25 ounce. Determine the minimum sample size required to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 0.85 ounce.
(b) Repeat part (a) using an error tolerance of 0.15 ounce.
(c) Which error tolerance requires a larger sample size? Explain.
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a n z c E 2 1645 085 025 2 31282 32 cans b n z c E 2 1...View the full answer
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Related Book For 
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ISBN: 9780321911216
6th Edition
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